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Summary: Nested Classes | Ctors | Methods | Inherited Methods

# Path

`public class Path`
`extends Object` ``

java.lang.Object
↳ | android.graphics.Path

The Path class encapsulates compound (multiple contour) geometric paths consisting of straight line segments, quadratic curves, and cubic curves. It can be drawn with canvas.drawPath(path, paint), either filled or stroked (based on the paint's Style), or it can be used for clipping or to draw text on a path.

## Summary

### Nested classes
`enum` | `Path.Direction` Specifies how closed shapes (e.g. rects, ovals) are oriented when they are added to a path.
`enum` | `Path.FillType` Enum for the ways a path may be filled.
`enum` | `Path.Op` The logical operations that can be performed when combining two paths.

### Public constructors
`Path()` Create an empty path
`Path(Path src)` Create a new path, copying the contents from the src path.

### Public methods
`void` | `addArc(float left, float top, float right, float bottom, float startAngle, float sweepAngle)` Add the specified arc to the path as a new contour.
`void` | `addArc(RectF oval, float startAngle, float sweepAngle)` Add the specified arc to the path as a new contour.
`void` | `addCircle(float x, float y, float radius, Path.Direction dir)` Add a closed circle contour to the path
`void` | `addOval(RectF oval, Path.Direction dir)` Add a closed oval contour to the path
`void` | `addOval(float left, float top, float right, float bottom, Path.Direction dir)` Add a closed oval contour to the path
`void` | `addPath(Path src, Matrix matrix)` Add a copy of src to the path, transformed by matrix
`void` | `addPath(Path src)` Add a copy of src to the path
`void` | `addPath(Path src, float dx, float dy)` Add a copy of src to the path, offset by (dx,dy)
`void` | `addRect(RectF rect, Path.Direction dir)` Add a closed rectangle contour to the path
`void` | `addRect(float left, float top, float right, float bottom, Path.Direction dir)` Add a closed rectangle contour to the path
`void` | `addRoundRect(RectF rect, float rx, float ry, Path.Direction dir)` Add a closed round-rectangle contour to the path
`void` | `addRoundRect(float left, float top, float right, float bottom, float rx, float ry, Path.Direction dir)` Add a closed round-rectangle contour to the path
`void` | `addRoundRect(RectF rect, float[] radii, Path.Direction dir)` Add a closed round-rectangle contour to the path.
`void` | `addRoundRect(float left, float top, float right, float bottom, float[] radii, Path.Direction dir)` Add a closed round-rectangle contour to the path.
`float[]` | `approximate(float acceptableError)` Approximate the `Path` with a series of line segments.
`void` | `arcTo(RectF oval, float startAngle, float sweepAngle, boolean forceMoveTo)` Append the specified arc to the path as a new contour.
`void` | `arcTo(float left, float top, float right, float bottom, float startAngle, float sweepAngle, boolean forceMoveTo)` Append the specified arc to the path as a new contour.
`void` | `arcTo(RectF oval, float startAngle, float sweepAngle)` Append the specified arc to the path as a new contour.
`void` | `close()` Close the current contour.
`void` | `computeBounds(RectF bounds, boolean exact)` Compute the bounds of the control points of the path, and write the answer into bounds.
`void` | `cubicTo(float x1, float y1, float x2, float y2, float x3, float y3)` Add a cubic bezier from the last point, approaching control points (x1,y1) and (x2,y2), and ending at (x3,y3).
`Path.FillType` | `getFillType()` Return the path's fill type.
`void` | `incReserve(int extraPtCount)` Hint to the path to prepare for adding more points.
`boolean` | `isConvex()` This method is deprecated. This method is not reliable. The way convexity is computed may change from release to release, and convexity could change based on a matrix as well. This method was useful when non-convex Paths were unable to be used in certain contexts, but that is no longer the case.
`boolean` | `isEmpty()` Returns true if the path is empty (contains no lines or curves)
`boolean` | `isInverseFillType()` Returns true if the filltype is one of the INVERSE variants
`boolean` | `isRect(RectF rect)` Returns true if the path specifies a rectangle.
`void` | `lineTo(float x, float y)` Add a line from the last point to the specified point (x,y).
`void` | `moveTo(float x, float y)` Set the beginning of the next contour to the point (x,y).
`void` | `offset(float dx, float dy, Path dst)` Offset the path by (dx,dy)
`void` | `offset(float dx, float dy)` Offset the path by (dx,dy)
`boolean` | `op(Path path1, Path path2, Path.Op op)` Set this path to the result of applying the Op to the two specified paths.
`boolean` | `op(Path path, Path.Op op)` Set this path to the result of applying the Op to this path and the specified path.
`void` | `quadTo(float x1, float y1, float x2, float y2)` Add a quadratic bezier from the last point, approaching control point (x1,y1), and ending at (x2,y2).
`void` | `rCubicTo(float x1, float y1, float x2, float y2, float x3, float y3)` Same as cubicTo, but the coordinates are considered relative to the current point on this contour.
`void` | `rLineTo(float dx, float dy)` Same as lineTo, but the coordinates are considered relative to the last point on this contour.
`void` | `rMoveTo(float dx, float dy)` Set the beginning of the next contour relative to the last point on the previous contour.
`void` | `rQuadTo(float dx1, float dy1, float dx2, float dy2)` Same as quadTo, but the coordinates are considered relative to the last point on this contour.
`void` | `reset()` Clear any lines and curves from the path, making it empty.
`void` | `rewind()` Rewinds the path: clears any lines and curves from the path but keeps the internal data structure for faster reuse.
`void` | `set(Path src)` Replace the contents of this with the contents of src.
`void` | `setFillType(Path.FillType ft)` Set the path's fill type.
`void` | `setLastPoint(float dx, float dy)` Sets the last point of the path.
`void` | `toggleInverseFillType()` Toggles the INVERSE state of the filltype
`void` | `transform(Matrix matrix, Path dst)` Transform the points in this path by matrix, and write the answer into dst.
`void` | `transform(Matrix matrix)` Transform the points in this path by matrix.

### Inherited methods
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

## Public constructors

### Path

    public Path ()

Create an empty path

### Path

    public Path (Path src)

Create a new path, copying the contents from the src path.

Parameters
`src` | `Path`: The path to copy from when initializing the new path This value may be `null`.

## Public methods

### addArc

    public void addArc (float left,
                    float top,
                    float right,
                    float bottom,
                    float startAngle,
                    float sweepAngle)

Add the specified arc to the path as a new contour.

Parameters
`left` | `float`
`top` | `float`
`right` | `float`
`bottom` | `float`
`startAngle` | `float`: Starting angle (in degrees) where the arc begins
`sweepAngle` | `float`: Sweep angle (in degrees) measured clockwise

### addArc

    public void addArc (RectF oval,
                    float startAngle,
                    float sweepAngle)

Add the specified arc to the path as a new contour.

Parameters
`oval` | `RectF`: The bounds of oval defining the shape and size of the arc This value cannot be `null`.
`startAngle` | `float`: Starting angle (in degrees) where the arc begins
`sweepAngle` | `float`: Sweep angle (in degrees) measured clockwise

### addCircle

    public void addCircle (float x,
                    float y,
                    float radius,
                    Path.Direction dir)

Add a closed circle contour to the path

Parameters
`x` | `float`: The x-coordinate of the center of a circle to add to the path
`y` | `float`: The y-coordinate of the center of a circle to add to the path
`radius` | `float`: The radius of a circle to add to the path
`dir` | `Path.Direction`: The direction to wind the circle's contour This value cannot be `null`.

### addOval

    public void addOval (RectF oval,
                    Path.Direction dir)

Add a closed oval contour to the path

Parameters
`oval` | `RectF`: The bounds of the oval to add as a closed contour to the path This value cannot be `null`.
`dir` | `Path.Direction`: The direction to wind the oval's contour This value cannot be `null`.

### addOval

    public void addOval (float left,
                    float top,
                    float right,
                    float bottom,
                    Path.Direction dir)

Add a closed oval contour to the path

Parameters
`left` | `float`
`top` | `float`
`right` | `float`
`bottom` | `float`
`dir` | `Path.Direction`: The direction to wind the oval's contour This value cannot be `null`.

### addPath

    public void addPath (Path src,
                    Matrix matrix)

Add a copy of src to the path, transformed by matrix

Parameters
`src` | `Path`: The path to add as a new contour This value cannot be `null`.
`matrix` | `Matrix`: This value cannot be `null`.

### addPath

    public void addPath (Path src)

Add a copy of src to the path

Parameters
`src` | `Path`: The path that is appended to the current path This value cannot be `null`.

### addPath

    public void addPath (Path src,
                    float dx,
                    float dy)

Add a copy of src to the path, offset by (dx,dy)

Parameters
`src` | `Path`: The path to add as a new contour This value cannot be `null`.
`dx` | `float`: The amount to translate the path in X as it is added
`dy` | `float`

### addRect

    public void addRect (RectF rect,
                    Path.Direction dir)

Add a closed rectangle contour to the path

Parameters
`rect` | `RectF`: The rectangle to add as a closed contour to the path This value cannot be `null`.
`dir` | `Path.Direction`: The direction to wind the rectangle's contour This value cannot be `null`.

### addRect

    public void addRect (float left,
                    float top,
                    float right,
                    float bottom,
                    Path.Direction dir)

Add a closed rectangle contour to the path

Parameters
`left` | `float`: The left side of a rectangle to add to the path
`top` | `float`: The top of a rectangle to add to the path
`right` | `float`: The right side of a rectangle to add to the path
`bottom` | `float`: The bottom of a rectangle to add to the path
`dir` | `Path.Direction`: The direction to wind the rectangle's contour This value cannot be `null`.

### addRoundRect

    public void addRoundRect (RectF rect,
                    float rx,
                    float ry,
                    Path.Direction dir)

Add a closed round-rectangle contour to the path

Parameters
`rect` | `RectF`: The bounds of a round-rectangle to add to the path This value cannot be `null`.
`rx` | `float`: The x-radius of the rounded corners on the round-rectangle
`ry` | `float`: The y-radius of the rounded corners on the round-rectangle
`dir` | `Path.Direction`: The direction to wind the round-rectangle's contour This value cannot be `null`.

### addRoundRect

    public void addRoundRect (float left,
                    float top,
                    float right,
                    float bottom,
                    float rx,
                    float ry,
                    Path.Direction dir)

Add a closed round-rectangle contour to the path

Parameters
`left` | `float`
`top` | `float`
`right` | `float`
`bottom` | `float`
`rx` | `float`: The x-radius of the rounded corners on the round-rectangle
`ry` | `float`: The y-radius of the rounded corners on the round-rectangle
`dir` | `Path.Direction`: The direction to wind the round-rectangle's contour This value cannot be `null`.

### addRoundRect

    public void addRoundRect (RectF rect,
                    float[] radii,
                    Path.Direction dir)

Add a closed round-rectangle contour to the path. Each corner receives two radius values [X, Y]. The corners are ordered top-left, top-right, bottom-right, bottom-left

Parameters
`rect` | `RectF`: The bounds of a round-rectangle to add to the path This value cannot be `null`.
`radii` | `float`: Array of 8 values, 4 pairs of [X,Y] radii This value cannot be `null`.
`dir` | `Path.Direction`: The direction to wind the round-rectangle's contour This value cannot be `null`.

### addRoundRect

    public void addRoundRect (float left,
                    float top,
                    float right,
                    float bottom,
                    float[] radii,
                    Path.Direction dir)

Add a closed round-rectangle contour to the path. Each corner receives two radius values [X, Y]. The corners are ordered top-left, top-right, bottom-right, bottom-left

Parameters
`left` | `float`
`top` | `float`
`right` | `float`
`bottom` | `float`
`radii` | `float`: Array of 8 values, 4 pairs of [X,Y] radii This value cannot be `null`.
`dir` | `Path.Direction`: The direction to wind the round-rectangle's contour This value cannot be `null`.

### approximate

    public float[] approximate (float acceptableError)

Approximate the `Path` with a series of line segments. This returns float[] with the array containing point components. There are three components for each point, in order:

- Fraction along the length of the path that the point resides
- The x coordinate of the point
- The y coordinate of the point

Two points may share the same fraction along its length when there is a move action within the Path.

Parameters
`acceptableError` | `float`: The acceptable error for a line on the Path. Typically this would be 0.5 so that the error is less than half a pixel. Value is 0 or greater

Returns
`float[]` | An array of components for points approximating the Path. This value cannot be `null`.

### arcTo

    public void arcTo (RectF oval,
                    float startAngle,
                    float sweepAngle,
                    boolean forceMoveTo)

Append the specified arc to the path as a new contour. If the start of the path is different from the path's current last point, then an automatic lineTo() is added to connect the current contour to the start of the arc. However, if the path is empty, then we call moveTo() with the first point of the arc.

Parameters
`oval` | `RectF`: The bounds of oval defining shape and size of the arc This value cannot be `null`.
`startAngle` | `float`: Starting angle (in degrees) where the arc begins
`sweepAngle` | `float`: Sweep angle (in degrees) measured clockwise, treated mod 360.
`forceMoveTo` | `boolean`: If true, always begin a new contour with the arc

### arcTo

    public void arcTo (float left,
                    float top,
                    float right,
                    float bottom,
                    float startAngle,
                    float sweepAngle,
                    boolean forceMoveTo)

Append the specified arc to the path as a new contour. If the start of the path is different from the path's current last point, then an automatic lineTo() is added to connect the current contour to the start of the arc. However, if the path is empty, then we call moveTo() with the first point of the arc.

Parameters
`left` | `float`
`top` | `float`
`right` | `float`
`bottom` | `float`
`startAngle` | `float`: Starting angle (in degrees) where the arc begins
`sweepAngle` | `float`: Sweep angle (in degrees) measured clockwise, treated mod 360.
`forceMoveTo` | `boolean`: If true, always begin a new contour with the arc

### arcTo

    public void arcTo (RectF oval,
                    float startAngle,
                    float sweepAngle)

Append the specified arc to the path as a new contour. If the start of the path is different from the path's current last point, then an automatic lineTo() is added to connect the current contour to the start of the arc. However, if the path is empty, then we call moveTo() with the first point of the arc.

Parameters
`oval` | `RectF`: The bounds of oval defining shape and size of the arc This value cannot be `null`.
`startAngle` | `float`: Starting angle (in degrees) where the arc begins
`sweepAngle` | `float`: Sweep angle (in degrees) measured clockwise

### close

    public void close ()

Close the current contour. If the current point is not equal to the first point of the contour, a line segment is automatically added.

### computeBounds

    public void computeBounds (RectF bounds,
                    boolean exact)

Compute the bounds of the control points of the path, and write the answer into bounds. If the path contains 0 or 1 points, the bounds is set to (0,0,0,0)

Parameters
`bounds` | `RectF`: Returns the computed bounds of the path's control points. This value cannot be `null`.
`exact` | `boolean`: This parameter is no longer used.

### cubicTo

    public void cubicTo (float x1,
                    float y1,
                    float x2,
                    float y2,
                    float x3,
                    float y3)

Add a cubic bezier from the last point, approaching control points (x1,y1) and (x2,y2), and ending at (x3,y3). If no moveTo() call has been made for this contour, the first point is automatically set to (0,0).

Parameters
`x1` | `float`: The x-coordinate of the 1st control point on a cubic curve
`y1` | `float`: The y-coordinate of the 1st control point on a cubic curve
`x2` | `float`: The x-coordinate of the 2nd control point on a cubic curve
`y2` | `float`: The y-coordinate of the 2nd control point on a cubic curve
`x3` | `float`: The x-coordinate of the end point on a cubic curve
`y3` | `float`: The y-coordinate of the end point on a cubic curve

### getFillType

    public Path.FillType getFillType ()

Return the path's fill type. This defines how "inside" is computed. The default value is WINDING.

Returns
`Path.FillType` | the path's fill type This value cannot be `null`.

### incReserve

    public void incReserve (int extraPtCount)

Hint to the path to prepare for adding more points. This can allow the path to more efficiently allocate its storage.

Parameters
`extraPtCount` | `int`: The number of extra points that may be added to this path

### isConvex

    public boolean isConvex ()

This method is deprecated.
This method is not reliable. The way convexity is computed may change from release to release, and convexity could change based on a matrix as well. This method was useful when non-convex Paths were unable to be used in certain contexts, but that is no longer the case.

Returns the path's convexity, as defined by the content of the path.

A path is convex if it has a single contour, and only ever curves in a single direction.

This function will calculate the convexity of the path from its control points, and cache the result.

Returns
`boolean` | True if the path is convex.

### isEmpty

    public boolean isEmpty ()

Returns true if the path is empty (contains no lines or curves)

Returns
`boolean` | true if the path is empty (contains no lines or curves)

### isInverseFillType

    public boolean isInverseFillType ()

Returns true if the filltype is one of the INVERSE variants

Returns
`boolean` | true if the filltype is one of the INVERSE variants

### isRect

    public boolean isRect (RectF rect)

Returns true if the path specifies a rectangle. If so, and if rect is not null, set rect to the bounds of the path. If the path does not specify a rectangle, return false and ignore rect.

Parameters
`rect` | `RectF`: If not null, returns the bounds of the path if it specifies a rectangle This value may be `null`.

Returns
`boolean` | true if the path specifies a rectangle

### lineTo

    public void lineTo (float x,
                    float y)

Add a line from the last point to the specified point (x,y). If no moveTo() call has been made for this contour, the first point is automatically set to (0,0).

Parameters
`x` | `float`: The x-coordinate of the end of a line
`y` | `float`: The y-coordinate of the end of a line

### moveTo

    public void moveTo (float x,
                    float y)

Set the beginning of the next contour to the point (x,y).

Parameters
`x` | `float`: The x-coordinate of the start of a new contour
`y` | `float`: The y-coordinate of the start of a new contour

### offset

    public void offset (float dx,
                    float dy,
                    Path dst)

Offset the path by (dx,dy)

Parameters
`dx` | `float`: The amount in the X direction to offset the entire path
`dy` | `float`: The amount in the Y direction to offset the entire path
`dst` | `Path`: The translated path is written here. If this is null, then the original path is modified. This value may be `null`.

### offset

    public void offset (float dx,
                    float dy)

Offset the path by (dx,dy)

Parameters
`dx` | `float`: The amount in the X direction to offset the entire path
`dy` | `float`: The amount in the Y direction to offset the entire path

### op

    public boolean op (Path path1,
                    Path path2,
                    Path.Op op)

Set this path to the result of applying the Op to the two specified paths. The resulting path will be constructed from non-overlapping contours. The curve order is reduced where possible so that cubics may be turned into quadratics, and quadratics maybe turned into lines.

Parameters
`path1` | `Path`: The first operand (for difference, the minuend) This value cannot be `null`.
`path2` | `Path`: The second operand (for difference, the subtrahend) This value cannot be `null`.
`op` | `Path.Op`: This value cannot be `null`.

Returns
`boolean` | True if operation succeeded, false otherwise and this path remains unmodified.

See also:

- `Path.Op`
- `op(Path, android.graphics.Path.Op)`

### op

    public boolean op (Path path,
                    Path.Op op)

Set this path to the result of applying the Op to this path and the specified path. The resulting path will be constructed from non-overlapping contours. The curve order is reduced where possible so that cubics may be turned into quadratics, and quadratics maybe turned into lines.

Parameters
`path` | `Path`: The second operand (for difference, the subtrahend) This value cannot be `null`.
`op` | `Path.Op`: This value cannot be `null`.

Returns
`boolean` | True if operation succeeded, false otherwise and this path remains unmodified.

See also:

- `Path.Op`
- `op(Path, Path, android.graphics.Path.Op)`

### quadTo

    public void quadTo (float x1,
                    float y1,
                    float x2,
                    float y2)

Add a quadratic bezier from the last point, approaching control point (x1,y1), and ending at (x2,y2). If no moveTo() call has been made for this contour, the first point is automatically set to (0,0).

Parameters
`x1` | `float`: The x-coordinate of the control point on a quadratic curve
`y1` | `float`: The y-coordinate of the control point on a quadratic curve
`x2` | `float`: The x-coordinate of the end point on a quadratic curve
`y2` | `float`: The y-coordinate of the end point on a quadratic curve

### rCubicTo

    public void rCubicTo (float x1,
                    float y1,
                    float x2,
                    float y2,
                    float x3,
                    float y3)

Same as cubicTo, but the coordinates are considered relative to the current point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.

Parameters
`x1` | `float`
`y1` | `float`
`x2` | `float`
`y2` | `float`
`x3` | `float`
`y3` | `float`

### rLineTo

    public void rLineTo (float dx,
                    float dy)

Same as lineTo, but the coordinates are considered relative to the last point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.

Parameters
`dx` | `float`: The amount to add to the x-coordinate of the previous point on this contour, to specify a line
`dy` | `float`: The amount to add to the y-coordinate of the previous point on this contour, to specify a line

### rMoveTo

    public void rMoveTo (float dx,
                    float dy)

Set the beginning of the next contour relative to the last point on the previous contour. If there is no previous contour, this is treated the same as moveTo().

Parameters
`dx` | `float`: The amount to add to the x-coordinate of the end of the previous contour, to specify the start of a new contour
`dy` | `float`: The amount to add to the y-coordinate of the end of the previous contour, to specify the start of a new contour

### rQuadTo

    public void rQuadTo (float dx1,
                    float dy1,
                    float dx2,
                    float dy2)

Same as quadTo, but the coordinates are considered relative to the last point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.

Parameters
`dx1` | `float`: The amount to add to the x-coordinate of the last point on this contour, for the control point of a quadratic curve
`dy1` | `float`: The amount to add to the y-coordinate of the last point on this contour, for the control point of a quadratic curve
`dx2` | `float`: The amount to add to the x-coordinate of the last point on this contour, for the end point of a quadratic curve
`dy2` | `float`: The amount to add to the y-coordinate of the last point on this contour, for the end point of a quadratic curve

### reset

    public void reset ()

Clear any lines and curves from the path, making it empty. This does NOT change the fill-type setting.

### rewind

    public void rewind ()

Rewinds the path: clears any lines and curves from the path but keeps the internal data structure for faster reuse.

### set

    public void set (Path src)

Replace the contents of this with the contents of src.

Parameters
`src` | `Path`: This value cannot be `null`.

### setFillType

    public void setFillType (Path.FillType ft)

Set the path's fill type. This defines how "inside" is computed.

Parameters
`ft` | `Path.FillType`: The new fill type for this path This value cannot be `null`.

### setLastPoint

    public void setLastPoint (float dx,
                    float dy)

Sets the last point of the path.

Parameters
`dx` | `float`: The new X coordinate for the last point
`dy` | `float`: The new Y coordinate for the last point

### toggleInverseFillType

    public void toggleInverseFillType ()

Toggles the INVERSE state of the filltype

### transform

    public void transform (Matrix matrix,
                    Path dst)

Transform the points in this path by matrix, and write the answer into dst. If dst is null, then the the original path is modified.

Parameters
`matrix` | `Matrix`: The matrix to apply to the path This value cannot be `null`.
`dst` | `Path`: The transformed path is written here. If dst is null, then the the original path is modified This value may be `null`.

### transform

    public void transform (Matrix matrix)

Transform the points in this path by matrix.

Parameters
`matrix` | `Matrix`: The matrix to apply to the path This value cannot be `null`.

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